Woodward GCP-20 Series User Manual

Manual 37128A GCP-20 Series - Genset Control
Page 142/190 © Woodward
Start/Stop Sequence 'Diesel Engine'
t/s
t
Sta VG
t t
Ein SPZ
t
1500 1/min
ZD
MV
t
0,5 s
VG
t t
Ein
0,5 s
N
t
Speed governor
Pre-glow
Starter
Start relay
Start request
Engine monitoring
activated
Delayed engine
monitoring 00s
Start Stop
Approach idle
gas position
Start attempt
unsuccessful
Start attempt
successful
Ignition speed reached
Start frequency
f-contr. + time
Figure 9-8: Start-stop sequence: Diesel engine
The signs and indices mean:
t
Sta
............Approach idle fuel position [s]
t
VG
...........Preglow time [s]
t
Ein
...........Crank time [s]
t
SPZ
..........Time between two start attempts [s]
t
MV
...........Delayed engine monitoring [s]
t
N
.............Engine cool down time [s]
Starting Sequence
If the control is equipped with a three-position frequency controller, a continuous signal (time adjustable via
Parameter 271) is output prior to starting the engine at the "Frequency lower" relay output. Following the expira-
tion of this time, the "Pre-glow" relay will be enabled (pre-glow time is configurable via
Parameter 267). Follow-
ing preheating, the fuel relay is enabled (
Parameter 272), followed by the crank relay. Once the firing speed
(
Parameter 275) has been exceeded, the starter disengages, and the fuel relay remains enabled by means of the
firing speed. After reaching the "f-controller: starting frequency" (
Parameter 33) and the delayed engine monitor-
ing has expired (
Parameter 274), the speed controller is enabled.

Woodward GCP-20 Series Specifications

General

Brand	Woodward
Model	GCP-20 Series
Category	Control Unit
Language	English